This reticle includes an illuminator, diagonal, 3x barlow, and two-axis adjustable reticle. Just turn the knobs to center the cross-hairs on your target star and voila! No need to adjust the position of your guide scope. The barlow can be removed and the eyepiece holder is adjustable. NO EYEPIECE INCLUDED! Works great with a Takahashi FS60-C. This is a 0.965" model, but can be used with a 1.25" adapter. $90 shipped in CONUS. Also available is a Tak .965" compression ring adapter for small Tak scopes($25).